.w {
    width: 80%;
    max-width: 1300px;
    margin:  0 auto;
}
.warpBox {
    min-height: 100vh;
    background-repeat: repeat-y;
    background-size: 100%;
    background-image: url(../images/img/about_bg.png);
    padding-bottom: 9.2857rem;
}
.warpBox .titleC {
    color: #c16002;
    font-size: 24px;
    line-height: 18px;
    margin: 30px 0 15px 0;
}
.content_1 {
    padding-top: 2.5rem;
    font-size: 15px;
    line-height: 30px;
    color: #212121;
}
.content_1 p {
    margin: 10px 0 15px 0;
}
.content_2>div>div {
    padding: 2px 4px;
    width: 48%;
    border: 4px solid #02305b;
}
.content_2 img {
    width: 100%;
    display: block;
}
.content_2 .txt {
    font-size: 18px;
    background-color: #fff;
    padding: 15px 0 16px 0;
}
.content_3>div>div {
    padding: 2px 4px;
    width: 48%;
    border: 4px solid #02305b;
}
.content_3 img {
    width: 100%;
    display: block;
}
.content_3 .txt {
    font-size: 18px;
    background-color: #fff;
    padding: 15px 0 16px 0;
}
@media (max-width:900px) {
    .content_2 .item,.content_3 .item {
        width: 100%;
        margin-bottom: 30px;
    }
}